North America Native Plant

Simpson’s Grasspink

Botanical name: Calopogon tuberosus var. simpsonii

USDA symbol: CATUS

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Calopogon pulchellus R. Br. var. simpsonii Ames, nom. nud. (CAPUS4)  âš˜  Limodorum simpsonii Small (LISI3)   

Simpson’s Grasspink: Florida’s Delicate Native Orchid Meet Simpson’s grasspink (Calopogon tuberosus var. simpsonii), a charming little orchid that’s as rare as it is beautiful. This petite native wildflower might just be the crown jewel of Florida’s wetland flora – if you’re lucky enough to spot one in the wild or ...

Rare plant alert!

Region: Conservation status by state

Status: S5T1T2: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Simpson’s Grasspink: Florida’s Delicate Native Orchid

Meet Simpson’s grasspink (Calopogon tuberosus var. simpsonii), a charming little orchid that’s as rare as it is beautiful. This petite native wildflower might just be the crown jewel of Florida’s wetland flora – if you’re lucky enough to spot one in the wild or skilled enough to grow one in your garden.

What Makes Simpson’s Grasspink Special?

Simpson’s grasspink is a perennial forb that belongs to the orchid family, and it’s got a quirky claim to fame: its flowers bloom upside-down compared to most orchids! The delicate pink to magenta blooms appear to be doing a little botanical headstand, creating an eye-catching display that’s sure to be a conversation starter.

This native beauty is found exclusively in Florida, making it a true Sunshine State endemic. It’s also known by the synonyms Calopogon pulchellus var. simpsonii and Limodorum simpsonii, though Simpson’s grasspink rolls off the tongue much more nicely.

Where Does It Call Home?

Simpson’s grasspink is a Florida native through and through, growing naturally in the state’s wet prairies, savannas, and boggy areas. You won’t find this little orchid anywhere else in the world – it’s as Floridian as key lime pie and alligators.

A Word of Caution: Rarity Alert!

Here’s where we need to have a serious chat. Simpson’s grasspink has a global conservation status that indicates it’s quite rare. This means that while it would make an absolutely stunning addition to the right garden, we need to be extremely responsible about how we source it.

If you’re considering adding this orchid to your garden, please only purchase from reputable native plant nurseries that propagate their own stock. Never collect plants from the wild – it’s not only harmful to wild populations but likely illegal as well.

Is Simpson’s Grasspink Right for Your Garden?

Let’s be honest – this isn’t your typical garden-center orchid. Simpson’s grasspink is for the dedicated native plant enthusiast who’s up for a challenge. Here’s what you need to know:

The Good News:

  • Absolutely stunning native orchid that supports local ecosystems
  • Attracts native bees (though it’s a bit of a trickster – more on that below)
  • Perfect for wetland gardens and native plant collections
  • Adds unique character with its upside-down flowers

The Reality Check:

  • Extremely difficult to grow and establish
  • Requires very specific growing conditions
  • Not readily available due to rarity
  • Best suited for experienced native plant gardeners

Growing Conditions: What Simpson’s Grasspink Needs

If you’re determined to give this beauty a try, here’s what it’s looking for in terms of living arrangements:

  • Moisture: Consistently moist to wet soils – think bog garden conditions
  • Soil: Acidic, sandy, or peaty soils with good drainage despite the moisture
  • Light: Full sun to partial shade
  • Climate: USDA hardiness zones 8-10 (basically, Florida’s climate)

The Pollinator Connection

Here’s where Simpson’s grasspink gets a bit sneaky. This little orchid practices what’s called deceptive pollination. It attracts native bees with the promise of nectar, but there’s no actual reward waiting for them. The bees still get dusted with pollen during their visit, so pollination happens, but they leave empty-handed. It’s not exactly playing fair, but it’s a fascinating evolutionary strategy!

Planting and Care Tips

Growing Simpson’s grasspink is not for the faint of heart. This orchid has very specific needs and relies on complex relationships with soil fungi (mycorrhizae) to survive. Here are some tips if you’re brave enough to try:

  • Start with plants from reputable native nurseries – never attempt to transplant from the wild
  • Create bog-like conditions with consistently moist, acidic soil
  • Avoid fertilizers, which can disrupt the delicate soil ecosystem the orchid needs
  • Be patient – orchids are slow growers and may take time to establish
  • Consider this more of a conservation effort than a typical gardening project

The Bottom Line

Simpson’s grasspink is undeniably beautiful and ecologically important, but it’s not a plant for everyone. If you’re an experienced native plant gardener with the right conditions and a passion for conservation, this rare orchid might be worth the challenge. However, most gardeners would be better served by choosing other Florida native wildflowers that are easier to grow and more readily available.

Remember, sometimes the best way to appreciate rare native plants is to support their conservation in the wild and enjoy them during nature walks rather than trying to bring them home. But if you do decide to take on this challenge, make sure you’re doing it responsibly and sustainably!

Simpson’s Grasspink

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Orchidales

Family

Orchidaceae Juss. - Orchid family

Genus

Calopogon R. Br. - grasspink

Species

Calopogon tuberosus (L.) Britton, Sterns & Poggenb. - tuberous grasspink

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA